meanwhile, alden smith monday night and the nfl noticed. that's next. >>> is there a doctor onboard? not something you want to hear at 30,000 feet. >> what are the chances you're going to need a doctor and how often do medical emergencies happen in the air? the investigative reporter says it does happen, frequently. in fact, every day. shea talked to the airlines about it or did try. >> reporter: we tried, jessica, but the airlines won't talk about it on camera and they aren't required to report in-flight medical emergencies. the faa does require airline attendants know how to administer cpr. medical kits and a defibrillator must be onboard. still, no one knows exactly how often passengers need that help. >> ladies and gentlemen, we have a medical emergency. >> reporter: it's something many travelers fear. >> it's a scary thing to 0 think each and every one of us is at risk. >> reporter: this woman's mother needed medical attention on a plane. >> we never expected her to die. she was on a trip. she was supposed to come home the next week. >